He began writing short fiction in 1957, but did not turn to novels until the 70s, a good deal of his novel work being space-opera. He wrote nineteen published novels and numerous short stories between 1973 and 1996. From 1974 to 1976 he was VP of SFWA. His professional papers are at the Eaton Collection. He was a member of the N3F. He served as OE of SAPS. Other apas included SAPA, IPSO, The Cult, and APA X.